P061C code meaning
Internal Control Module Engine RPM Performance
Powertrain system Generic code P06xx codes Check engine light
What P061C means
Electronic throttle systems run a second, independent calculation on the same processor (level 2, at Ford 'IPC – independent plausibility check') that recomputes driver demand, permitted and actual torque and their inputs, and compares them with the main software. P061C means the two internal engine speed calculations from the crankshaft signal disagree. GM's 6.6 L Duramax sets it at 400 rpm or more difference once the redundant speed is at least 600 rpm and the engine is synchronised, after 0.32 s, with the lamp after two trips; Ford's diesel also uses 400 rpm (5 s), Ford gasoline engines react within 1 s with the check engine light. Because speed is a base value of torque monitoring, limp mode follows. A disturbed crankshaft signal can make both paths react differently, so fix P0335–P0339 first.
P061C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P061C
- Check engine, wrench or service lamp
- Reduced power or RPM limit
- Stumbling or brief misfires with a disturbed signal
- Rarely stalling
Common causes of P061C
- Most likelyEngine module software or calibration fault (update available)
- PossibleDisturbed crankshaft signal (sensor, reluctor, shielding, connector, interference)
- PossibleVoltage dips, poor ground or supply at the module
- Less likelyInternal defect of the engine module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleCrankshaft position sensor
What each part of P061C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6 | Area: computer (engine control module) and output circuits. |
| 1C | The exact fault in that area. |
What to do next
- Note P061C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P061C
What does P061C mean?
P061C means "Internal Control Module Engine RPM Performance". Electronic throttle systems run a second, independent calculation on the same processor (level 2, at Ford 'IPC – independent plausibility check') that recomputes driver demand, permitted and actual torque and their inputs, and compares them with the main software. It is a generic code, so it means the same on every make.
Is it safe to drive with P061C?
Drive gently and only to a workshop. With P061C the car can go into limp mode (reduced power) to protect itself.
Will P061C fail an emissions test?
Yes, it can. P061C is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P061C to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P061C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.